If you believe in evolution, you believe that different genders have different traits that make them better suited for different aspects of life.

When you have a child, you make a choice that you will help raise it. You are responsible for another life and that IS your job. When you decide that you want to be responsible for another life but then make choices that directly contradict that like not being around for the majority of the day, you hurt the child's upbringing.

No matter what your reasons are, a child misses out on the growing experience that nature and evolution have designed. The reasons behind that decision may be unavoidable and I don't see the world in black and white but if you want to be a parent you should act like a parent to the best of your ability.